Impatiens plant named Celsia

ABSTRACT

A new and distinct cultivar of Impatiens plant named Celsia, characterized by its bright medium pink cupped flowers, vigorous and upright growth habit with excellent self-branching, dark bronze-green foliage, with vegetative leaves having a red midvein, floriferous habit, and by its suitability to pot or hanging basket culture.

The present invention relates to a new and distinct cultivar of plant known as Impatiens and commercially known as New Guinea Impatiens. The new cultivar is known by the cultivar name Celsia, and was developed by the inventor Ludwig Kientzler in Gensingen, Federal Republic of Germany by crossing the cultivar designated C-19 (seed parent) with the cultivar Caligo (pollen parent). Caligo is disclosed in U.S. Plant Pat. No. 6,682.

Asexual reproduction by terminal (stem tip) cuttings taken by me or under my supervision at Gensingen, Federal Republic of Germany, has shown that the unique features of this new Impatiens are stabilized and are reproduced true to type in successive propagations.

The following characteristics distinguish the new Impatiens from both its parent varieties and other cultivars of this general type known and used in the floriculture industry:

1. Vigorous, upright growth habit with excellent branching characteristics. Plants in 16.5 cm pots were 24 cm tall and 38 cm wide, ten weeks after planting.

2. Large, medium pink flowers. Open flowers measure up to 5 cm in diameter. Flowers are somewhat cupped, giving depth to the flower presentation.

3. Very floriferous. Plants in 16.5 cm pots were in flower 8 weeks after planting.

4. Dark bronze-green foliage. Vegetative leaves have a red midvein.

5. Well suited for commercial production in all commonly used pot sizes. Also excellent for hanging basket culture.

Celsia is similar in many respects to the pollen parent Caligo. Celsia differs from Caligo in the following respects. The leaf surface of Celsia is distinctly rougher than Caligo. Celsia has a much darker pink flower than the light pink flower color of Caligo.

The accompanying colored photograph is a top perspective view of the new cultivar, showing color as true as it is reasonably possible to obtain in a colored reproduction of this type.

The following is a detailed description of my new Impatiens cultivar based on plants grown under commercial practice in Encinitas, Calif. Plants were started as rooted cuttings and were transplanted in mid-February into 16.5 cm (6.5 inch) pots, one pot per plant. By early May, plants were growing vigorously and were in flower. The values, measurements and observations noted below were taken from plants in full bloom in early May.

Color references are made to The Royal Horticultural Society Colour Chart (R.H.S.), except where general terms of ordinary dictionary significance are used.

Parentage: Cross between C-19 (seed) and Caligo (pollen).

Asexual reproduction:

A. Cutting type.--Tip, with stems 2-3 cm long developing to 4-5 cm after 21 days in propagation.

B. Time to initiate roots.--8-10 days at 23° C.; nicely developed root mass in 18-21 days.

C. Rooting habit.--Numerous, fibrous, adventitious roots from the stem.

Plant description:

A. Form.--Symmetrical, bush shaped, flowering herb, with self-branching characteristics giving the plant a full appearance.

B. Habit of growth.--Vigorous, self-branching habit, producing whorls of leaves and flowers. Growth is indeterminate and flowering is continuous.

C. Foliage description.--Leaves are simple. Lower leaves on stems are opposite. Higher leaves in whorls of 3-5, but predominately 5. 1. Leaf shape: Mostly ovate. Leaf blade tips are acuminate; bases are acute. 2. Leaf blade size: Mature leaves 8-9 cm long and 3.5 to 4 cm wide. 3. Petiole length: Approximately 2 cm. 4. Leaf margin: Ciliated. 5. Leaf texture: Slightly rugose and hirsutulous. a. Upper surface: Scabrous. b. Under surface: Mostly glabrous, but finely pubescent on the leaf veins. 6. Leaf color: Dark green with a red midvein. a. Upper surface: Darker than 147A. b. Under surface: Greyed-purple near 183A-B. 7. Venation: Pinnate.

Flowering description:

A. Flowering habits.--Very floriferous. Flowering is continuous. Flowers develop progressively around the whorl of leaves, taking 5-7 days from buds which show color, to bloom. Flowers are single and large, lasting for 2-3 weeks.

B. Natural flowering season.--Flowering is indeterminate and occurs throughout the year. Quantity of flowers increases with increasing light intensity and duration. However, floriferousness may wane during hot summer days in temperate climates.

c. Flower buds.--Ellipsoidal and covered with 3 sepals plus 2 rudimentary sepals fused into the under surface of the superior petal. A spur originates from the base of the inferior sepal. Spur is reddish pink and approximately 4.5 cm long.

D. Flowers borne.--Singly or more commonly on forked purplish-red pedicels about 3 cm long. This forked pedicel is unusual and does not occur on many known cultivars.

E. Quantity of flowers.--Occasionally one but mostly two flowers per leaf. Flowers occur progressively around the whorl of leaves so that tight buds to mature flowers are visible at the same time.

F. Petals.--Petals open less than perpendicular to the pedicel so the plane of the flower surface is cupped. 1. Number of petals: Five (5) petals, all overlapping. 2. Shape: All petals are heart-shaped. Superior petal has a broad base. Other petals have a pointed base. 3. Color: Bright pink. a. Upper surface: Near 55A. b. Under surface: Near 58D. 4. Flower size: Up to 5 cm or larger in diameter.

G. Reproductive organs.--Flowers are monoecious. 1. Stamens: Five (5), broad and fused to form a tube around the ovary. 2. Anther: Hooded and cream colored. 3. Pollen: Cream colored. 4. Stigma: Five pointed star, colorless. 5. Styles: Very short. 6. Ovary: 5-celled, 4-5 mm long until fertilized. Grows to 1 cm or longer after fertilization; purplish green in color.

Resistance to disease: Good resistance to common stem and root disease, Rizoctonia and Pythium. Botrysis may be a problem in humid or mist propagation environments, but no greater than with other New Guinea Impatiens cultivars. 

I claim:
 1. A new and distinct cultivar of Impatiens plant named Celsia, as illustrated and described. 